Getting the Client Address in SignalR

In SignalR, to obtain the client's connection information, you can use IHttpConnectionFeature to retrieve the client's communication IP and port.

            // Get the service
            var feature = Context.Features.Get<IHttpConnectionFeature>();
            var httpContext = Context.GetHttpContext();
			
            ArgumentNullException.ThrowIfNull(feature);
            ArgumentNullException.ThrowIfNull(httpContext);

            // Header query information
            var clientIdSV = httpContext.Request.Headers["ClientId"];
            var clientId = clientIdSV.FirstOrDefault();
            ArgumentNullException.ThrowIfNull(clientId);

            // Get the client's communication address
            var remoteAddress = feature.RemoteIpAddress;
            ArgumentNullException.ThrowIfNull(remoteAddress);
            var remotePort = feature.RemotePort;

If you want to get the client's Hub ConnectionId, you can use

base.Context.ConnectionId